Lee, Daegu-Si
Hae-Dong Lee, Daegu-Si KR
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20140169138 | APPARATUS AND METHOD FOR REPELLING PESTS IN GREENHOUSE - Provided is a method for repelling pests from a greenhouse which is open and closed by a vent, and the method includes recognizing a pest which lives in or may possibly come into a greenhouse, detecting a frequency required to repel the recognized pest; and emitting an ultrasonic wave or attractant light with the detected frequency. | 06-19-2014 |
Hwan Joo Lee, Daegu-Si KR
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20100026636 | Liquid crystal display device - A liquid crystal display device having a plurality of pixel cells for displaying an image and sensing light incident on the pixel cells, each of the pixel cells includes a pixel circuit that displays an image based on a data voltage supplied from a data line in accordance with a gate signal from a gate line; and a touch sensor that senses light incident on the pixel cell, storing a light sensing signal based on the sensed light, and supplying the stored light sensing signal to a read-out integrated circuit via a read-out line in accordance with a scan signal from a scan line. | 02-04-2010 |
Jyung Hyun Lee, Daegu-Si KR
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20110021902 | REAL-TIME ELECTROCARDIOGRAM MONITORING SYSTEM AND METHOD, PATCH-TYPE ELECTROCARDIOGRAPH, TELECOMMUNICATION APPARATUS - The present invention relates to a real-time electrocardiogram monitoring system and method, a patch-type electrocardiograph and a telecommunication apparatus. The real-time electrocardiogram monitoring system includes: a patch-type electrocardiograph which is attached to a skin of a subject in the form of a patch, measures an electrocardiogram of the subject, and generates and transmits first electrocardiogram data of a first frame format for near-field transmission of the measured electrocardiogram signal; a relay-type communication device which receives the first electrocardiogram data from the patch-type electrocardiograph, extracts electrocardiogram data, and combines the extracted electrocardiogram with identification information of the subject to generate second electrocardiogram data of a second frame format for far-field transmission; a monitoring server which receives the second electrocardiogram data from the relay-type communication device, extracts the electrocardiogram data and the subject identification information, and classifies, stores and outputs in real time the electrocardiogram data based on the subject identification information; and a repository which classifies and stores the electrocardiogram data. The real-time electrocardiogram monitoring system further includes: a broadcasting server which relays the electrocardiogram stored by the monitoring server to a remote place; and a viewer which views the electrocardiogram data received from the broadcasting server. | 01-27-2011 |
Mun- Woo Lee, Daegu-Si KR
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20120112833 | 3-WAY DOHERTY POWER AMPLIFIER USING DRIVING AMPLIFIER - Disclosed is a 3-way Doherty power amplifier using a driving amplifier in which driving amplifiers are connected to the front stages of a carrier amplifier and a peaking amplifier, respectively, so as to obtain a high gain and a high efficiency. To this end, the Doherty power amplifier includes: a hybrid power distributor for distributing an input signal into first and second path units; and a driving amplifier for receiving a signal outputted from the hybrid power distributor and controlling the driving of a carrier amplifier, a first peaking amplifier, and a second peaking amplifier, wherein: the carrier amplifier, the first peaking amplifier, and the second peaking amplifier are connected to a rear stage of the driving amplifier, respectively; the first path unit generates a high efficiency at a low input power; and the second path unit maintains a high efficiency and gain in a high output range. | 05-10-2012 |
20120218044 | Three-Stage GaN HEMT Doherty Power Amplifier for High Frequency Applications - A three-stage GaN HEMT Doherty power amplifier for high frequency applications includes: a carrier amplifier; first and second peaking amplifier; a 10-dB power divider configured to divide an input signal to the carrier amplifier and the first and second peaking amplifiers; a first path for controlling input power of the carrier amplifier; and a second path for maintaining an efficiency of 40% or more in an output range of 40 dBm to 50 dBm. | 08-30-2012 |
Weon-Mok Lee, Daegu-Si KR
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20080252793 | MEDIA CONTROLLER WITH ANTI-MICROBIAL AND ANTI-FUNGAL CAPABILITY - A media controller with anti-microbial and anti-fungal capability is provided. The media controller not only receives and outputs an audio signal provided from an external media device such as a television or a recorded media player and controls the external media device, but also outputs the sound or audio signal received from the media device as audible sound. The media controller is capable of having an antimicrobial, antifungal, or antibacterial agent used in hospitals coated on an external surface thereof to provide anti-microbial and anti-fungal properties when a user comes into contact with the media controller. | 10-16-2008 |
Young-Ju Lee, Daegu-Si KR
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20130284663 | REVERSE OSMOSIS MEMBRANE INCLUDING ULTRA-HYDROPHILIC PASSIVATION LAYER AND METHOD OF MANUFACTURING THE SAME - A reverse osmosis separation membrane includes a porous support, a separation active layer formed on the supporting layer, and a ultra hydrophilic layer formed on the separation active layer. The ultra-hydrophilic layer includes a complex metal oxide including at least one metal element selected from the group consisting of Ti(IV), Zr(IV), Sn(IV) and Al(III), and Si, and an organic compound containing a hydrophilic group making a physical or chemical bond with Ti(IV), Zr(IV), Sn(IV) or Al(III) among the complex metal oxide. A method of manufacturing the reverse osmosis separation membrane also is provided. A reverse osmosis membrane including a single coating layer and having an improved durability, chlorine-resistance and antifouling properties may be provided. | 10-31-2013 |
20130292325 | METHOD FOR PREPARING REVERSE OSMOSIS MEMBRANE, AND REVERSE OSMOSIS MEMBRANE PREPARED THEREBY - There is disclosed a method for preparing a reverse osmosis membrane, the method including: forming a first coating layer by coating an aqueous amine solution on a surface of a microporous support to have a thickness of 20 μm to 30 μm; removing an excess of the aqueous amine solution from the microporous support; and forming a second coating layer by coating an aliphatic hydrocarbon-based organic solution including acyl halide on the first coating layer to have a thickness of 10 μm to 30 μm. | 11-07-2013 |
Young Seb Lee, Daegu-Si KR
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20090046458 | Cooling structure for street lamp using light emitting diode - Provided is a cooling structure for a street lamp using light emitting diodes. The cooling structure comprises a heat-dissipating case having an installation portion therein, a printed circuit board installed within the installation portion, one or more light emitting diodes installed under the printed circuit board, a heat transfer unit for transferring heat to be generated from the light emitting diodes to the top of the heat-dissipating case and dissipating the heat to the outside, and reflection plates disposed at the bottom of the heat-dissipating case. The cooling structure is efficiently improved to quickly and rapidly dissipate heat generated from the light emitting diodes during turn-on. With this configuration of the cooling structure, the street lamp is protected from failure and has greatly improved durability. In addition, the light emitting structure is improved to inhibit loss of luminance. Therefore, the energy efficiency of the street lamp can be effectively improved. | 02-19-2009 |